The Journal of 



HEREDITY 



^ monthly puhlkatm devoted to fiant^reedm 

 ^nimal3reediman(iEuQenics 



OCTOBER, 1923 

 TWINS AGAIN 



A. E. WiGGAM 



DOMINANT DWARFNESS IN OATS 



T. R. Stanton 



THE THYROID GLAND AND DEVELOPMENT 



Frederick S. Hammett 



MALFORMATIONS OF COTTON PLANTS 



O. F. Cook 



GERMLESS SEEDS IN MAIZE 



M, Demerec 



PUBLISHED BY THE 



AMERICAN' GENETIC ASSOCIATION 

 BALTIMORE , MD. and WASHINGT0N,D.C 



Volume XIV Number 7 



